Veetop 1x 800m Water Resistant Motorbike Motorcycle Helmet Intercom Bluetooth Helmet Headsets Interphone and 2.5mm Aux for Walkie Talkie GPS - Hands Free & FM radio (1Pack) Bluetooth intercom: 800m intercom distance enable you can talk with your 2 or 3 partners freely. (but only 2 riders intercom at the same time) Warkie Talkie Connection: Built-in 2.5mm audio socket, you can connect to your Walkie Talkie with a suitable cable (the walkie-talkie and the cable is NOT provided) , now you can talk with 4 or more rider mates who also have walkie talkie, the voice will be transferred via earpiece and micro phone of Bluetooth motorcycle helmet intercom. (For the rider quantity supported, it depends on the walkie talkie itself) Water resistant: No worry any more when driving in the raining day. 2.5mm Audio Socket: You can connect this motorcycle intercom to your cell phone, tablet PC, GPS or other devices to transfer the music/voice into the earpiece via a 2.5mm to 3.5mm audio cable (provided) Hands free & FM radio: It supports Bluetooth wireless music streaming and hands free, so that you can enjoy the music or answer/reject the phone call easily. And also it is built-in FM radio, enable your driving travel more wonderful.